Equations & Systemshard
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Two pipes can fill a swimming pool together. Pipe A alone fills it in 6 hours, and Pipe B alone fills it in 9 hours. If both pipes are open simultaneously, how long does it take to fill the pool?
Two pipes can fill a swimming pool together. Pipe A alone fills it in 6 hours, and Pipe B alone fills it in 9 hours. If both pipes are open simultaneously, how long does it take to fill the pool?